<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
		var arr = [1,2,3,4,5]
		for(i in arr){
			console.log(i.length);
		}
		</script>
	</body>
</html>
